IMAGE PROCESSING [ELECTIVES] MAY 2008 ELECTRONICS AND TELECOMMUNICATION SEMESTER 8

IMAGE PROCESSING [ELECTIVES] MAY 2008 ELECTRONICS AND TELECOMMUNICATION SEMESTER 8

Con.3430-08.                                  (REVISED COURSE)                          CO-3487

                                                             (3 Hours)                                   [Total Marks:-100]

N.B:- (1) Question No.1 is compulsory.
         (2) Attempt any four out of remaining six questions.
         (3) Figures to the right indicate full marks.
         (4) Assume suitable data wherever necessary and justify the same.

1. (a) Consider the image segment shown below:- [5 Marks]
               3   1   2   1 (q)
               2   2   0   2
               1   2   1   1
         (p) 1   0   1   2
              Compute the lengths of the shortest 4, 8 and m-path between p and q.
     (b) Explain Morphological thining algorithm. [5 Marks]
     (c) Justify 'Quality of picture depends on no. of pixels and gray-levels. [5 Marks]
     (d) Obtain the slant transformation of the image f(x,y) [5 Marks]
           
2. (a) Explain the separability and translation property of Discrete Fourier transform for an
         image. [10 Marks]
     (b) The square is represented by co-ordinates (1,1), (3,1), (1,3)and (3,3). If the square is
           rotated by 45˚ clockwise and shifted by 2 units, obtain its new co-ordinates. [10 Marks]

3. (a) Gray level Histogram of an image is given below:- [10 Marks]

     

         Compute the gray level Histogram of the output image obtained by enhancing the input
         by histogram equalization technique. Draw input, output histogram along with its transfer
         function.
    (b)Apply prewitt and Laplacian operators on given image segment. use appropriate threshold.
        Give output image before and after thresholding. [10 Marks] 

4. (a) Write first four wash sequence of length N=4. Using these sequences generate sixteen
          orthogonal walsh patterns. [10 Marks]
    (b) Draw and explain block diagram of IPEG Encoder and Decoder. [10 Marks]

5. (a) Generate Huffman code for the given source. Calculate Entropy of the source, average

          length code word and Huffman efficiency. [12 Marks]                                                                                 

    (b) Consider an 8-pixels line of gray scale data as {12,12,13,13,10,13,57,54}. Which has
          been uniformly quantized with 8 bit accuracy. Construct its IGS code. State and explain
          in brief the type of redundancy which is exploited here to achieve compression. [8 Marks] 

6. (a) Define opening and closing operations. perform these operations on following image
         segment with given structuring element:- [10 Marks]

          

                      Image Segment                             Structuring Element
    (b) For given boundary compute 4 path chain code find first difference, circular first
         difference shape number and order of boundary. [10 Marks]

                       

7. Write short notes on(any four):- [20 Marks]
     (a) Pseudo color Image Processing
     (b) Arithmetic Coding
     (c) Brightness Adaption and Discrimination
     (d) Region-oriented segmentation.
     (e) Texture
     (f) Moments